Diaphragm pump



The article to which our new design is applied, “diaphragm pump”, is used as air pump for supplying compressed air into such as medical apparatus for home use; monitoring and sampling apparatus, for example.

FIG. 1 is a perspective view of my new design of diaphragm pump;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a plane view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is a cross-sectional view taken along the line 7—7 of FIG. 2.

It being understood that the broken lines are for illustrative purposes only.

This article is characterized in that there are four striae in the shape of slender rectangle in the upper part of casing, each two of said strae being in parallel with each other, and formed from the center of the upper part towards right or left ends, as shown in the plane view, and also that there are the same four striae in the bottom of casing, as shown in the bottom view.

The parts of the article drawn in full lines are our new design for which we seek registration. 

The ornamental design for a diaphragm pump, as shown and described. 